Improvement in saw-set



H. A. HARRIS, OF CENTER, TEXAS..

Letters Patent'No. 99,889, dated February l5, 1870.

IMPROVEMENT IN SAW-SET.

The Schedule referred to in 't'.'rxee- Letters Patent and making part of the same.

To all 'whom it 'may concern:

' Bc it known that I, H. A. HARRIS, of Center, in the county of Shelby, and' State of Texas, have invented a new and improved Saw-Set; and l do hereby declare that the following is a full, clear, and exact description thereof, which will enable'others skilled` in the art to make and use'the same, reference being had to the accompanying drawings forming part o f this specilication.

Figure 1 represents a side view of my improved sawset.

Figure 2 is an edge view of thesame.

Figure 3 is a top view of the stem.

Similar letters of reference indicate corresponding parts.

This invention relates to a new implement which can be used for setting the teeth of all kinds of saws by hand, and without requiring ahy intricate machinery.

The invention consists in the arrangement of a perforated stem,'which is to receive the teeth of the saw successively, and in the combination therewith of an L-shaped gauge, which regulates the degree of set.

A, in the drawing, represents a metallic bar or plate, -of suitable size, and held in a handle, B.

`It has near its upper end a suitable number of transverse apertures, d, one above the other, and all ot' different lengths, as shown in fig. 2.. They are made higher at one side than at the other, as shown.

C is an L-shaped plate,ltted with its long perforated shank, a, through a mort-isc formed in the lower part of the bar A, and pivoted to such bar by a pin, c. Its other arm, e, projects upward on that side ot' A ou vwhich the apertures l are narrowest.

The bar A may have steps f formed ou it, in line with the lower sides of the larger apertures, and scales may be marked on such steps.

Along the mortise may also be marked a scale, b, to regulate the position of the gauge C, the -said gauge being clamped in any desired position by a suitable setscrew, g.

The operation is as follows:

The saw being clamped in a suitable machine, the instrument is applied by itting one tooth ot' the saw int-o one of the apertures d, as far as muy be required. The instrument is then swung to bend the tooth until the end of the arm e strikes the blade. 'lhen the device is applied to the second next tooth., and so forth, until all 'alternate teeth are bent in one direction. The

instrument is then applied from the other side to the remaining teeth.

The various apertures d are of di'erent sizes, to be adapted to the different kinds of teeth, and are made with inclined upper faces to prevent the straining of the edges of theteethf The gauge has numbers of apertures, and can also be clamped in any position to regulatethe degree of set.

Having thus described my invention,

I claim as new, and desire to. secure by Letters Patent- A saw-set, consisting of the perforated bar A and of the L-shaped gauge C, adjustable by means of a setscrew, G, all combined and operating substantially as herein shown' and described.

H. A. HARRIS.

Witnesses:

R. L. PARKER, (l. G. GREENWOOD. 

